262292-YTG-B-0107

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TABLE 23: BLOWER MOTOR AND DRIVE DATA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MOTOR1

 

ADJUSTABLE MOTOR PULLEY

FIXED BLOWER PULLEY

 

BELT

 

MODEL

 

BLOWER

 

 

(NOTCHED)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

DRIVE

RANGE

 

 

 

EFF.

DESIG-

OUTSIDE

PITCH

BORE

DESIG-

OUTSIDE

PITCH

BORE

DESIG-

PITCH

 

 

(RPM)

HP

FRAME

 

 

 

 

 

(%)

NATION

DIA.

DIA.

(IN.)

NATION

DIA.

DIA.

(IN.)

NATION

LENGTH

QTY.

 

 

 

 

 

 

 

 

 

 

 

 

(IN.)

(IN.)

 

 

(IN.)

(IN.)

 

 

(IN.)

 

 

Standard

790/970

5

184 T

 

89.5

 

 

 

1-1/8

BK105

10.25

9.9

 

 

 

 

15 TON

High

940/1130

7.5

213 T

 

91

1VP62

5.95

4.9-5.92

1-3/8

BK90

8.75

8.4

1

BX81

82.8

1

 

Speed

 

 

 

 

 

 

 

 

 

Access

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Speed

910/1100

7.5

213 T

 

91

1VP68

6.55

5.5-6.5

1-3/8

 

 

 

 

 

 

 

 

Drive

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20 TON

Standard

 

10

215 T

 

91

 

 

 

 

BK100

9.75

9.4

1-3/16

BX81

82.8

1

 

High

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Speed

1000/1180

15

254 T

 

91

1VP71

7.1

5.4-6.6

1-5/8

 

 

 

 

 

 

 

 

Access

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Speed

900/1100

7.5

213 T

 

91

1VP65

6.0

4.8-6.0

1-3/8

 

 

 

1-3/16

BX78

79.8

 

 

Drive

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25 TON

Standard

 

 

 

 

 

 

 

 

 

1B5V94

9.7

9.5

 

 

 

1

 

High

 

15

254 T

 

91

 

 

 

1-5/8

 

 

 

1-7/16

 

 

 

 

Speed

1000/1200

 

1VP71

7.1

5.5-6.5

 

 

 

BX81

82.8

 

 

Access

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.All motors have a nominal speed of 1800 RPM, a 1.15 service factor and a solid base. They can operate to the limit of their service factor because they are located in the moving air, upstream of any heating device.

2.Do NOT close this pully below 1 turn open.

TABLE 24: STATIC RESISTANCES1

 

 

 

 

 

RESISTANCE, IWG

 

 

 

DESCRIPTION

 

 

 

 

 

CFM

 

 

 

 

 

 

15 TON

 

 

20 TON

 

 

25 TON

 

 

 

 

 

 

 

 

 

 

 

4500

6000

7500

6000

8000

9000

7500

8000

9000

WET INDOOR COIL

 

0.1

0.1

0.1

0.1

0.1

0.2

0.1

0.1

0.2

 

18 KW

0.3

0.4

0.4

0.4

0.4

0.5

0.4

0.4

0.5

ELECTRIC HEAT OPTIONS

36 KW

0.3

0.4

0.5

0.4

0.5

0.5

0.5

0.5

0.5

54 KW

0.4

0.5

0.5

0.5

0.5

0.6

0.5

0.5

0.6

 

 

72 KW

0.4

0.5

0.5

0.5

0.5

0.6

0.5

0.5

0.6

ECONOMIZER OPTION

 

0.1

0.1

0.1

0.1

0.1

0.2

0.1

0.1

0.2

HORIZONTAL DUCT CONNECTIONS2

0.1

0.2

0.3

0.2

0.3

0.5

0.3

0.3

0.5

1.Deduct these resistance values from the available external static pressures shown in the respective Blower Performance Table.

2.Since the resistance to air flow will be less for horizontal duct connections than for bottom duct connections, add these pressures to the ESP values on the respective unit’s blower performance table.

TABLE 25: POWER EXHAUST PERFORMANCE

MOTOR

 

 

 

STATIC RESISTANCE OF RETURN DUCTWORK, IWG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPEED1

 

0.2

0.3

 

 

0.4

 

0.5

 

0.6

CFM

 

kW

CFM

kW

CFM

 

kW

CFM

 

kW

CFM

 

kW

 

 

 

 

 

HIGH2

5250

 

0.83

4500

0.85

4200

 

0.88

3750

 

0.93

3000

 

0.99

MEDIUM

4900

 

0.77

3900

0.79

3500

 

0.82

2900

 

0.85

-

 

-

LOW

4400

 

0.72

3700

0.74

3000

 

0.78

-

 

-

-

 

-

1.Power exhaust motor is a 3/4 HP, PSC type with sleeve bearings, a 48 frame and inherent protection.

2.The factory setting.

38

Unitary Products Group

Page 38
Image 38
York WR300, WR240 warranty Blower Motor and Drive Data, Static RESISTANCES1, Power Exhaust Performance

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